Man and eobeet j



(N0 Model.)

J. T. HYNDMAN.

METALLIC SHINGLE.

No. 326,655. Patented Sept. 22, 1885.

UNITED STATES PATENT OFFICE.

JOHN T. HYNDMAN, OF CINCINNATI, OHIO, ASSIGNOR TO WM. G. HYND- MAN ANDROBERT J. HYNDMAN, OF SAME PLACE.

SPECIFICATION forming part of Letters Patent No. 326,655, datedSeptember 22, 1885.

Appllt'atiun filed July 16, 1885. (No model.)

To all whom it may concern.-

Be it known that I JOHN T. HYNDMAN, a citizen of the United Statesresiding at Gincinnati, in the county of Hamilton and State of Ohio,have invented certain new and useful Improvements in MetallicShingles;and I do hereby declare that the following is a full, clear, and exactdescription of the same, reference being had to the annexed drawings,making a part of this specification, and to the letters and figures ofreference marked thereon.

Figure 1 of the drawings is a perspective view showing the manner ofconnecting the shingles together; Fig. 2, a perspective view of one ofthe shingles, and Fig. 3 a sectional View thereof taken online mm ofFig. 2.

The present invention has relation to certain new and usefulimprovementsin metallic roofing-shingles; and the object theieof is toso construct the shingles as to enable them to be quickly and securelyconnected together.

The invention therefore consists in forming a scroll or coil alongtheshingle,at or near the center thereof, ofsu ch shape that when sprungover the scroll or coil of the shingle below it will by its tendency tocontract firmly embrace and clamp itself around the underscroll or coil,as will be hereinafter described and claimed.

In the accompanying drawings, A repre sents the shingle constructed ofsheet metal and of any style and shape as found desirable.

The shingle A is formed with acentral scroll or coil, a, which isgreater than a semicircle in cross-section, as shown in Fig. 3, thusrendering it necessary to expand when engaging with the scroll or coilof the shingle below it, and the natural tendency to contract in regaining its normal shape will of itself firmly embrace and clamp theshingle to the one below it, thus enabling the entire number of shingleson a roof or other structure to be effectually secured together. thebody of the shingles being secured to the roof by nailing. One end ofthe scroll or coil a may be made a little larger, so as to be moreeasily slipped over the scroll or coil of the adjacent shingle, thuscompletely covering the nail-heads of the shingle below it.

Having now fully described my invention, what I claim as new, and desireto secure by Letters Patent, is-

A metallic roofing-shingle formed with a scroll or coil of asize greaterthan asemicircle, whereby it will act as a springclamp upon the scrollor coil of the shingle below it to fasten itself thereto, substantiallyas and for the purpose set forth.

In testimony that I claim the above I have hereunto subscribed my namein the presence of two witnesses.

JOHN T. HYNDMAN.

Witnesses:

GEORGE F. WHITE, EDWARDS RITCHIE.

